“I’m just a big hairy American winning machine, you know?” – Ricky Bobby, Talladega Nights
When I was in my mid-twenties I owned a motorcycle (Wow, that sentence makes me sound old). One of the more enjoyable, and stupid, things to do on a motorcycle is to drive fast at night. The small cone of light put off by the headlight and the road rushing by underneath, makes you feel like you are flying.
I have since gotten too old, and “burdened” with too many responsibilities to ride a motorcycle. My newer, much safer way of satiating my need for speed is with sprints. As long distance runners, especially ultrarunners, we focus on going long and slow. This strategy can get a bit boring and your muscles adapt and get used to the stress. Running intervals allows me to engage different muscles and train in a different manner. These intervals also bring about new soreness. After running 10 intervals of about 200 meters each, my quads are screaming. I end up spending the next few days walking pretty slow, limping, and enjoying the feeling of going fast for just a few moments.